The Left Hand of Darkness is a science fiction novel written by Ursula K. Le Guin. Set in a distant future on the planet of Gethen, the story follows a human envoy named Genly Ai who is sent to establish diplomatic relations with the planet's inhabitants, who are androgynous and have no fixed gender. As Genly navigates the complex social and political landscape of Gethen, he grapples with his own biases and preconceptions. The book explores themes of gender, identity, and the nature of humanity. With its thought-provoking ideas and beautiful prose, The Left Hand of Darkness is a literary masterpiece.